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HomeRepair HelpBosch Oven RepairBosch Range making a loud noise Repair
Bosch Range making a loud noise
When your Bosch range is making a loud noise, the fan blade is the most likely cause. A bent blade or blade sliding on the shaft can rub against the housing and create an oven fan noise, rattling, or humming sound. Inspect the blade for damage and replace it if needed. If the noise is a sudden "whoosh" or small boom when a gas burner or oven ignites, the gas may not be lighting promptly. A faulty spark ignition switch, or the spark ignition switch and harness, can allow gas to build up before ignition. Test the switch for electrical continuity with a multimeter. A worn fan motor is another common source of oven making noise because failed bearings, a damaged blower, or a loose blade can cause vibration. For a gas oven, a weak oven igniter may also cause a delayed ignition whoosh. If it glows for more than 90 seconds without lighting the flame, or has no continuity, replace the igniter. Finally, a failing convection motor can rattle or let the convection fan strike the housing. Enter your Bosch range model number to find the exact replacement part for your appliance.
01 - Bosch Range/Stove/Oven Fan Blade
The fan blade may be bent or sliding on the shaft and rubbing on the housing. Inspect the fan blade. If the fan blade is bent or damaged it will need to be replaced.
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02 - Bosch Range/Stove/Oven Spark Ignition Switch
If the gas is not lighting correctly, it can build up and flash, causing a “whoosh” noise on the burner. This can potentially be caused by a faulty spark ignition switch only working intermittently. You can use a multimeter to test the spark ignition switch or switches for electrical continuity to determine if the component is functioning normally.
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03 - Bosch Range/Stove/Oven Spark Ignition Switch and Harness
If the gas is not lighting correctly, it can build up and flash, causing a “whoosh” noise on the burner. This can potentially be caused by a faulty spark ignition switch and harness only working intermittently. You can use a multimeter to test the spark ignition switches for electrical continuity to determine if the assembly is functioning normally.
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04 - Bosch Range/Stove/Oven Fan Motor
The fan motor turns the fan blade to circulate the air. The fan motor is often sold as an assembly. If the fan motor bearings are bad, or the fan blade or blower is damaged, the fan motor will need to be replaced.
Highly Likely
05 - Bosch Range/Stove/Oven Igniter
If the gas is not being ignited promptly, it can build up and flash causing a small "boom" noise in the oven or a "whoosh" noise on the burner. A faulty igniter could be the cause of the gas not igniting promptly. To determine if the igniter is defective, observe the igniter when the oven is on. If the igniter glows for more than 90 seconds without igniting the gas flame, this indicates that the igniter is too weak to open the valve. If the igniter is weak, replace it. If the igniter does not glow at all, use a multimeter to test the igniter for continuity. If the igniter does not have continuity, replace it.
Highly Likely
06 - Bosch Range/Stove/Oven Convection Motor
The convection motor drives the convection fan to circulate the air inside the oven. The convection oven must circulate the air for the oven to heat evenly. If the motor bearings are bad the motor may rattle or the fan may hit the housing. If the convection fan motor shaft wobbles, or the motor is making a loud noise, replace the convection motor.
Common
Frequently Asked Questions
Why is my Bosch range making a loud noise?
What should I check if my Bosch oven fan is making noise?
Why does my Bosch gas range make a whoosh or boom when it lights?
How do I test the igniter or spark ignition switch on a Bosch range?
How do I find the correct Bosch range fan blade, motor, or igniter?
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